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Finding the Fourth Proportional to 971,993.80, 1,457,990.70 and 912,896.20

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Solution

The fourth proportional to 971,993.80, 1,457,990.70 and 912,896.20 is: 1,369,344.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    971,993.80 : 1,457,990.70 = 912,896.20 : x
  2. Step 2: Convert to fraction form
    971,993.80/1,457,990.70 = 912,896.20/x
  3. Step 3: Cross multiply
    971,993.80x = 1,457,990.70 × 912,896.20
  4. Step 4: Simplify right side
    971,993.80x = 1,330,994,169,665.34
  5. Step 5: Solve for x
    x = 1,330,994,169,665.34/971,993.80
  6. Step 6: Final answer
    x = 1,369,344.30

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.